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From 73102ec1ec9d6f19758734652b4872b9abb249c5 Mon Sep 17 00:00:00 2001
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From: Max Reitz <mreitz@redhat.com>
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Date: Mon, 18 Jun 2018 14:59:37 +0200
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Subject: [PATCH 064/268] qemu-img: Amendment support implies create_opts
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RH-Author: Max Reitz <mreitz@redhat.com>
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Message-id: <20180618145943.4489-2-mreitz@redhat.com>
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Patchwork-id: 80758
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O-Subject: [RHV-7.6 qemu-kvm-rhev PATCH 1/7] qemu-img: Amendment support implies create_opts
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Bugzilla: 1537956
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RH-Acked-by: John Snow <jsnow@redhat.com>
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RH-Acked-by: Kevin Wolf <kwolf@redhat.com>
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RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
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Instead of checking whether a driver has a non-NULL create_opts we
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should check whether it supports image amendment in the first place. If
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it does, it must have create_opts.
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On the other hand, if it does not have create_opts (so it does not
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support amendment either), the error message "does not support any
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options" is a bit useless. Stating clearly that the driver has no
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amendment support whatsoever is probably better.
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Signed-off-by: Max Reitz <mreitz@redhat.com>
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Reviewed-by: John Snow <jsnow@redhat.com>
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Reviewed-by: Eric Blake <eblake@redhat.com>
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Message-id: 20180509210023.20283-2-mreitz@redhat.com
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Signed-off-by: Max Reitz <mreitz@redhat.com>
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(cherry picked from commit 1f996683ad908fd41c572221a63d9fc31ce04d07)
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Signed-off-by: Max Reitz <mreitz@redhat.com>
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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qemu-img.c | 7 +++++--
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1 file changed, 5 insertions(+), 2 deletions(-)
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diff --git a/qemu-img.c b/qemu-img.c
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index 60e45ec..2f7c491 100644
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--- a/qemu-img.c
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+++ b/qemu-img.c
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@@ -3740,13 +3740,16 @@ static int img_amend(int argc, char **argv)
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goto out;
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}
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- if (!bs->drv->create_opts) {
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- error_report("Format driver '%s' does not support any options to amend",
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+ if (!bs->drv->bdrv_amend_options) {
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+ error_report("Format driver '%s' does not support option amendment",
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fmt);
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ret = -1;
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goto out;
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}
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+ /* Every driver supporting amendment must have create_opts */
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+ assert(bs->drv->create_opts);
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+
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create_opts = qemu_opts_append(create_opts, bs->drv->create_opts);
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opts = qemu_opts_create(create_opts, NULL, 0, &error_abort);
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qemu_opts_do_parse(opts, options, NULL, &err;;
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--
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1.8.3.1
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